Solvent recovery from sweep gas streams
US11291944B2 · kind B2 · utility
0Cited by
13References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2017 |
| Grant date | Apr 5, 2022 |
| Priority date | — |
| Expiry date | Oct 22, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B3/28
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for removing solvent from a solvent containing sweep gas stream obtained from a fertilizer coating process is disclosed. The method can include directly contacting the solvent containing sweep gas stream with an aqueous composition comprising 50% wt/wt to 100% wt/wt of water, condensing at least a portion of the solvent out of the solvent containing sweep gas stream into the aqueous composition to produce a solvent-enriched aqueous composition and a recovered sweep gas stream, and removing the recovered sweep gas stream from the solvent-enriched aqueous composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.